<template>
  <div class="comment-post">
    <van-field
      class="post-field"
      v-model.trim="message"
      rows="2"
      autosize
      type="textarea"
      maxlength="50"
      placeholder="请输入留言"
      show-word-limit
    />
    <van-button
      class="post-btn"
      @click="onPost"
      :disabled="message.length===0"
    >发布</van-button>
  </div>
</template>

<script>
import { addComment } from '@/api/comment'
export default {
  name: 'CommentPost',
  components: {},
  props: {
    target: {
      type: [Number, String, Object],
      required: true
    }
  },
  // inject: ['articleId'],
  inject: {
    articleId: {
      type: [Number, String, Object],
      default: null
    }
  },
  data () {
    return {
      message: ''
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    async onPost () {
      // 获取评论的数据
      const { data: { data } } = await addComment({
        target: this.target,
        content: this.message,
        art_id: (this.articleId && this.articleId.toString() !== this.target.toString()) ? this.articleId.toString() : null
      })
      // 关闭弹层
      // 父子通信
      // 添加评论数据到评论列表的最上面
      // 父子通信,父组件之间操作子拒绝
      this.$emit('post-success', data)
      // 清空输入框
      this.message = ''
    }
  }
}
</script>

<style scoped lang="less">
.comment-post {
  display: flex;
  align-items: center;
  padding: 32px 0 32px 32px;
  .post-field {
    background-color: #f5f7f9;
  }
  .post-btn {
    width: 150px;
    border: none;
    padding: 0;
    color: #6ba3d8;
    &::before {
      display: none;
    }
  }
}
</style>
